A hair dyeing method including the following steps (I) and (II) ； step (I) : mixing a first agent comprising an alkaline agent and an oxidation dye precursor, a second agent comprising an oxidizing agent, and a third agent comprising one or more dyes (A) selected from the group consisting of the following (A-l) , (A-2) , and (A-3) , having a pH at 25℃ of 7.5 or more and 12 or less when diluted to be 10 times by mass with water； and step (II) : applying a mixed solution prepared in step (I) on hair.本發明係一種染毛方法，其具有以下之步驟(I)及(II)。 步驟(I)：將含有鹼劑及氧化染料先質之第1劑、含有氧化劑之第2劑、以及含有選自由下述(A-1)、(A-2)及(A-3)所組成之群中之一種或兩種以上之染料(A)且經水稀釋10質量倍時之於25℃下之pH值為7.5以上且12以下之第3劑進行混合； 步驟(II)：將步驟(I)中所製備之混合液塗抹至毛髮。
